A Colchester zoo worker who sexually abused a five-year-old boy will not see his jail time increase after his "unduly lenient" sentence was reviewed at an appeal court.

David Pennery, 26, was jailed for seven years for sexually abusing the young child, leaving his victim's family "emotionally wrecked" and the youngster himself "deeply traumatised".

Attorney General, Jeremy Wright QC, referred it to London's Appeal Court for judges to look at the sentencing again after he criticised it for being too lenient.

Pennery, a catering assistant at the zoo, pleaded guilty to three counts of sexual assault on a child under 13 and making indecent photographs of children after the family of the child reported him to the police.